用三维单矩法计算复杂形体电磁散射

用三维单矩法计算复杂形体电磁散射 CALCULATION OF EM SCATTERING FROM COMPLEX OBJECTS USING THE 3-D UNIMOMENT METHOD 温晓峰 Wen Xiaofeng Xu Penggen Lu Shu Kang Hongxia Wang Lilong 1 2 first-author 徐鹏根 1 2 鲁述 1 2 康红霞 1 2 王力隆 1 2 武汉大学空间物理系 武汉大学空间物理系 Department of Space Physics,Wuhan University Department of Space Physics,Wuhan University 武汉大学计算中心 武汉大学计算中心 本文讨论三维单矩法的原理,表述方式及计算方法。推导了满足导体表面自然边界条件的变分方程,讨论了总刚的形成和有限元方程的求解以及场值及其偏导的计算。用所述方法计算了二维、三维及轴对称体的散射,典型问题的结果与严格解进行了比较,吻合得较好。 This paper discusses the theorem and numerical technique of the 3～D Unimoment Method.The variational equation satisfying the natural boundary conditions on conducting surface is developed.The formation of the general stiff matrix and the solving process of finite element equation are discussed, and then,we obtain the values of the field and its partial differences.The scattering field of 2-D,3-D and axisymmetrical objects are computed.The results of typical problems are in good agreement with the exact solutions. 复杂形体 不均匀体 电磁散射 单矩法 complex geometries inhomogeneous object electromagnetic scattering unimoment method 国家自然科学基金(61672102) 1991-01-01 2021-04-01 1